YouTube Timestamps is a Firefox extension designed to improve video navigation by integrating comment timestamps directly into the video timeline. This tool allows users to hover over these timestamps to preview the associated comments, providing context and facilitating quick access to specific sections of the video. It supports both Fullscreen and Theater modes, making it versatile for various viewing preferences. Additionally, it's compatible with embedded videos, enhancing its usability across different platforms.

The extension also features a dark theme, catering to users who prefer a more visually comfortable interface. Being open-source, it allows for community contributions and transparency in its development. However, it is worth noting that only timestamps from the first 100 comments are displayed, which may limit access to some user insights in longer comment sections.